5-140671445-G-C

Variant names:

• chr5-140671445-G-C
• NM_194249.3:c.910C>G

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_194249.3(DND1):​c.910C>G​(p.Leu304Val) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: DND1 NM_194249.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.75

Genes affected

DND1 (HGNC:23799): (DND microRNA-mediated repression inhibitor 1) This gene encodes a protein that binds to microRNA-targeting sequences of mRNAs, inhibiting microRNA-mediated repression. Reduced expression of this gene has been implicated in tongue squamous cell carcinoma. Two pseudogenes of this gene are located on the long arm of chromosome 17. [provided by RefSeq, Dec 2010]

WDR55 (HGNC:25971): (WD repeat domain 55) Predicted to be involved in rRNA processing. Located in nucleolus and nucleoplasm. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.24900836).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DND1	NM_194249.3	c.910C>G	p.Leu304Val	missense_variant	Exon 4 of 4	ENST00000542735.2	NP_919225.1
WDR55	NM_017706.5	c.*1791G>C		3_prime_UTR_variant	Exon 7 of 7	ENST00000358337.10	NP_060176.3
WDR55	XM_005268469.4	c.*213G>C		3_prime_UTR_variant	Exon 8 of 8		XP_005268526.1
WDR55	XM_017009600.3	c.*1791G>C		3_prime_UTR_variant	Exon 8 of 8		XP_016865089.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DND1	ENST00000542735.2	c.910C>G	p.Leu304Val	missense_variant	Exon 4 of 4	1	NM_194249.3	ENSP00000445366.1
WDR55	ENST00000358337.10	c.*1791G>C		3_prime_UTR_variant	Exon 7 of 7	1	NM_017706.5	ENSP00000351100.5

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Oct 02, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.910C>G (p.L304V) alteration is located in exon 4 (coding exon 4) of the DND1 gene. This alteration results from a C to G substitution at nucleotide position 910, causing the leucine (L) at amino acid position 304 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.11
BayesDel_addAF	Benign	-0.11	T
BayesDel_noAF	Benign	-0.40
CADD	Uncertain	23
DANN	Uncertain	0.99
DEOGEN2	Benign	0.11	T
Eigen	Benign	0.15
Eigen_PC	Uncertain	0.24
FATHMM_MKL	Uncertain	0.85	D
LIST_S2	Benign	0.75	T
M_CAP	Benign	0.011	T
MetaRNN	Benign	0.25	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.81	L
PrimateAI	Benign	0.46	T
PROVEAN	Benign	-0.68	N
REVEL	Benign	0.084
Sift	Benign	0.30	T
Sift4G	Benign	0.49	T
Polyphen		0.95	P
Vest4		0.28
MutPred		0.43		Gain of sheet (P = 0.0011);
MVP		0.50
MPC		1.4
ClinPred		0.72	D
GERP RS		5.4
Varity_R		0.11
gMVP		0.66

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.10		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr5-140051030;